Explosion-engine operated by liquid fuel.



'0. L. RIEGELS. EXPLOSION ENGINE OPERATED BY LIQUID FUEL. APPLICATIONFILED FEB. 16, 1909.

1,008,199. Patented Nov. 7, 1911.

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- INVENTQR, OLZF LEQNHARDT RIEGE Ls,

by Attorney COLUMBIA PLANUGHM'H C(I WASHlNGTON, n. c.

oxrrnn snares PATENT carton.

OLAF LEONHARDT RIEGELS, 0F CHRISTIANIA, NORWAY,

EXPLOSION-ENGINE OPERATED BY LIQUID FUEL.

To all whom it may concern:

Be it known that I, OLAF LEONHARDT RIEGELS, of Christiania, in theKingdom of Norway, have invented a new and useful Explosion-EngineOperated by Liquid Fuel; and I do hereby declare the following to be afull, clear, and exact description of the same.

My present invention relates to the twostroke cycle explosion-engines,which are operated by means of heavy liquid fuels, for instancepetroleum.

The invention substantially consists in the evaporator being arranged inthe pipe or channel which connects the crank chamber to the enginecylinder. The combined atomizer, evaporator and carbureter which aboveand below is termed evaporator is preferably heated by the gases ofcombustion exhausted from the said cylinder. Hereby is obtained, thatthe fuelwhich in two-stroke cycle engines operated by heavy hydrocarbonsis usually sprayed into the cylinder in an atomized state-is convertedinto vapor and mixed with the air already before it passes into thecylinder, the consequence of which is a more complete combustion and abetter economy than hitherto has been possible.

The invention is illustrated in the accompanying drawing whichrepresents a vertical section through the engine.

The evaporator --1 is inserted in the pipe 2- or other channelconnecting the closed crank chamber 3 with the combustion chamber 4 ofthe engine cylinder. Atmospheric air is sucked into the crank chamber 3,through the air-valve 5 during the upward stroke of the piston,

whereupon the air during the down-stroke of the piston is pressedthrough the lower part of the pipe 2 up into the evaporator 1, withinwhich it is mixed with the fuel. The latter is supplied through theneedle valve and is at once converted into a vaporous state. Theexplosive mixture hereby formed then-partly also under sucking actionfrom the cylinderpasses through the upper part of the pipe 2 and entersthrough the port 6 the combustion chamber 4L of the cylinder, in whichthe mixture is compressed during the up-stroke of the piston and isignited near the uppermost position of the latter by means of anelectric are produced by the igniting device Specification of LettersPatent.

Application filed February 16, 1909.

Patented Nov. '7, 1911.

Serial No. 478,195.

12. The power developed by the explosion is then transmitted in usualway.

The evaporator is constructed in wellknown manner. evaporator shown inthe drawing may be used. In this evaporator the fuel is carried alongand mixed with the air current passing with a high velocity through themixing valve 11-. The conversion of the finely distributed fuelparticles into a vaporous state and their intimate mixing with the airis effectively supported by the mixture coming in contact with surfacesor pipes which are highly heated by the hot gasses of com bustionexhausted from the cylinder and conducted through a short pipe (notshown) and through the opening -8- into the jacket 13- of theevaporator.

The motor is started from being cold either by supplying to the cylinderthrough a threeway-valve a liquid fuel evaporating under normalatmospheric temperature (such as benzin) until the evaporator -1 hasbeen sufiiciently heated, or by previously heating the evaporator bymeans of a usual solder-lamp, in a well-known manner.

In order to obviate pre-explosions (back explosions) from attaining untothe evaporator, one or more frames 9 provided with metal gauze-cloth areinserted in the channel 2 between the evaporator and the cylinder. Alsobetween the evaporator and the crank chamber the channel 2 is providedwith an inclined gauze cloth 14., and beneath the latter is arranged apit l0 provided with a tapping-cock 15- or a plug for the purpose ofaccumulating and removing waste of fuel and preventing same from comingdown into the crank chamber 3.

Having now described my invention, what I claim as new and desire tosecure by Letters Patent is 1. In a cycle explosion engine, an enginecylinder, a casing secured to the engine cylinder and forming therewitha crank chamher, an inlet valve for the crank chamber, a piston in thecylinder and adapted to compress air in the crank chamber, a pipeconnecting the cylinder and chamber with each other, an evaporator insaid pipe, means for conducting the hot exhaust gases from the cylinderto the evaporator to heat the same, and a metal gauze inserted in saidpipe between the evaporator and the crank cham- For instance the Diirrher, said pipe being provided with a pit forming part of the channelbetween the metal gauze and the evaporator for collecting waste fuelfrom the evaporator.

2. In a cycle explosion engine, an engine cylinder, a casing joining thesame and forming therewith a crank chamber, an inlet valve for the crankchamber, a piston in the cylinder and adapted to compress air in thecrank chamber, a pipe connecting the crank chamber-with the cylinder, anevaporator in said pipe, a frame with metal gauze inserted in the pipebetween the evaporator and the cylinder and a mixing valve in the pipebetween the evaporator and the crank chamher.

3. In a cycle explosion engine, an engine cylinder, a casing joining thesame and forming therewith a crank chamber, an inlet valve for the crankchamber, a piston in the cylinder and adapted to compress air in thecrank chamber a pipe connecting the crank chamber with the cylinder, anevaporator in said pipe, a metal gauze inserted in the pipe between thecrank chamber and the evaporator, a frame with metal gauze inserted inthe pipe between the evaporator and the cylinder and a mixing valve inthe pipe be tween the first named metal gauze and the evaporator.

4. In a cycle explosion engine, an engine cylinder, a casing oining thesame and forming therewith a crank chamber, an inlet valve for the crankchamber, a piston in the cylinder and adapted to compress air in thecrank chamber a pipe connecting the crank chamber with the cylinder, anevaporator in said pipe, a metal gauze inserted in the pipe between thecrank chamber and the evaporator, a frame with metal gauze inserted inthe pipe between the evaporator and the cylinder and a mixing valve inthe pipe between the first named metal gauze and the evaporator, saidpipe being provided with a collecting pit between said first named metalgauze and the evaporator.

Signed at Christiania,Norway this twenty sixth day of January A. D.1909.

OLAF LEONHARDT RIEGELS.

Witnesses:

RICHARD STOKKE, AxnL LAHM.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

